CVTs are prone to overheat, though if I read your post right, it was in February. The cooler is probably a good idea.
TPMS are a nuisance. In my experience you can see a soft tire, and you'll feel it in the handling. It may take a couple warm cool cycles for the light to go away so give it a day or two.

 

I went back to Belle Tire last night to see their Jeep expert try to get this low tire pressure light go off. He couldn't figure it out and told me I needed to go to a dealer. So 3 trips to Belle Tire, 4 new sensors, 10 plus hours of waiting and the light still is on. I really want it fixed to be safe but I don't want to invest much more time and money. Probably $100 just to have the dealer look at it then parts and labor. Belle tire guaranteed the tire sensors were the correct ones and were working. Does anybody have any advice on replacing the sensor that is in the car?

 

Put about 55lbs in the tires and go drive for 3-5 miles above 50mph and see if there is any joy...That worked for me. If the light goes out adjust the pressure down to 35 and see what happens. I always had intermittent problems with that light at much under 35psi....This was on my 09...

 

55 pounds is a little much, I tend to fill mine to 37 just to be safe, but keep it in optimum range.

 

I replaced two TPMS sensors on mine. After replacing them I went multiple places and everyone told me that they could read the sensors on their machine but could not program them to the TPMS module. I had to go to Jeep for that. I took it to the dealer and 20 minutes later it was good to go.

As far as the trans overheat issue, The CVT is a bit known for that issue. Chrysler's programming leaves a lot to be desired as lots of manufacturers have used this CVT and have not had the overheat issue that Chrysler has had. That being said, flushing the fluid and changing the filters usually fixes the issue. It might also be worth asking the dealer if there are any updates needed. My Patriot was less than a year old when I got the overheat issue. I took it in had the fluid flushed and the filter replaced and they applied a software update. Total cost was around 300 bucks. Driving over 75MPH for extended periods of time will do the transmission no favors with regards to overheating. And, once it overheats the fluid foams and it will continue to happen at increasingly frequent intervals until the fluid is flushed and the filters are changed. Since it happened again so soon after having it serviced I would go back to the dealer and have them check it out again.

 

Thank you for the replies. I over inflated the tires and drove around for 20 minutes or so and the light stayed on. Dropped the pressure down to 37 and the light stayed on. Down to 30 and the light stayed on. Back to 35 and the light stayed on. This system is incredibly frustrating. I am getting the cross members looked at by a dealer and will ask them about this light. The transmission overheating is a really big issue. I can't believe there has not been a recall on this. First few times he was driving home from work in the summer and it overheated in like 15-20 minutes. He was running the ac and the days were hot. So I went to the dealer and had the fluid changed for a cool $300 plus. The car was fine until this February. He was going back to school with 2 of his teammates and it was about 55 degrees that day and extremely windy. One of the guys was running a fever so the ac was on. About 80 minutes in the transmission overheated again on the busy highway. He probably was going over 70mph for about 50 minutes straight. Do you think a new ac condenser and an auxiliary cooler will fix this problem? The drive is 2 1/2 hours on the highway. To be safe he needs to go with the traffic flow and drive 70mph. It is ridiculous to me that you have to drive a certain speed with no ac on and take breaks every hour or so to prevent the transmission from overheating. I have to get this fixed or sell it and get something that doesn't overheat. Having the low tire light on doesn't help trying to sell it.

 

A trans cooler would certainly help the overheat problem, however, I think something else must be going on. While the trans overheat is a known issue, and is clearly a Chrysler problem as non of the other manufacturers using this CVT have the problems Chrysler does, The vehicle should function and drive as equipped from the factory. I would stand on the dealer to resolve the issue. I agree that a person needs to be able to keep up with traffic and speed limits are 70MPH in most places now. The manual points out that in hilly or mountainous terrain sustained speeds over 75mph will cause the trans to overheat. It's been a while, but I don't remember the area around Chicago being particularly hilly or mountainous.... And lots of people on this very forum live in much more mountainous regions and do not have issues with the trans overheating. Like I said previously though, once the trans has overheated it will continue to happen with increasing regularity. I know this because when I had the issue it happened once when I was on the highway in the mountains. Then after that it would happen regularly regardless of terrain or speed until I had the transmission serviced. So if it happened in February it will come back until some corrective action is taken.

 

We got along fine without TPMS since the Duryea brothers. If it was me I'd drive it till inspection time and deal with it then. Quit playing with the inflation, drive it, and see if it goes away on its own. Every time you change the inflation you are upsetting/postponing any natural resetting it may be trying to accomplish. Just cool it for awhile.

 

My CVT never overheated. I was hard on it though, and between lack of knowing about CVT maintenance(for which I blame Chrysler...they really should have put something out there, even with a replace-only contract) and my budget at the time, I didn't get around to changing the fluid/filter until 82k. Had the dealer do it, supplied them with Pentosin CVT1 for the job(only fluid the auto shop was willing to sell me, as it was the only one that showed up on their computer for the Patriot). That 82k fluid change is when my trans started slipping. Still didn't overheat. Lasted until 97k though, when it snapped on me. It was then towed to a nearby repair shop where a friend of mine works, and after about three months of figuring out what to do, then getting it done, I had it back. Replacement CVT is a 2013 unit, 29k miles at time of install, with Valvoline CVT fluid in it. No problems so far, but I'm only up to 100k-101k now. Been spending most of my time earning money from the cab of an International Prostar.

 

So I took the Jeep to the dealer to look at the cross members and they need replacing. I asked them if there was an update that could be programmed on my transmission as I have been having problems. They said there was no such program and if I made another appointment they would look at it for a charge. I asked them about the low tire light and was told that it has to be the tpms sensors and that I would need another appointment for that. I confirmed that all the sensor are new and working. They told me that only OEM sensors would work and I would have to replace them all. So I called John Dow industries regarding my DVT 1002H sensors and was assured they were compatible. The told me to air all tires down to under 10lbs wait the re inflate to the correct pressure and drive for 20 minutes and the system would reset. I was so excited and was going to tell Belle tire and the Jeep dealer that I figured out the low tire matrix when they couldn't. Surprisingly (not) this didn't work. Called John Dow back again and they said to clear the codes and it will reset. I tried to clear the OBD codes but they wouldn't clear. Not even for a second. I never had a problem with any car to clear codes before. I wonder if there are electrical problems as I have a built in waterfall on the dome light fixture when it rains. So that is where I am at. Going to get those cross members fixed. Put on a new ac condenser and auxiliary transmission cooler to help the crap CVT transmission in this car. Plus I get to enjoy the Christmas light display on the dash since those can't be reset.

 

Don't know what to tell you about the TPMS. CVT has it's quirks, but mine only let me down when I let it down. As for your dome light problem, that has something to do with a drain plug someplace, others know more than me. Remember, this vehicle was built to an MSRP and an MPG. It's no Challenger, it's no Cadillac, it's not a WRX STI. You want that effect, that means $$$$. Patriot's a good vehicle overall, though there are bad batches of any vehicle, and many dealers are stealerships because they can be.

 

Remember, this vehicle was built to an MSRP and an MPG. It's no Challenger, it's no Cadillac, it's not a WRX STI. You want that effect, that means $$$$.

My first car was a Ford Falcon. My Dad was along on its maiden voyage. We'd been a couple miles from the downtown area along a road with modest hills and a slight overall gain in altitude. We were going maybe 35mph in a 40mph zone.

"So, son, how fast will it go?"
"I dunno Dad. I've been accelerating since we left town."​

No lie; that conversation actually took place!

In retrospect it was a case of unrealized genius. The car was virtually incapable of a speeding ticket. I had it through the first gas crisis in 1974: I could make the round trip from home to college and back on my 10 gallon tankful. That was 150 miles each way in a vehicle with a smaller fuel tank than our Patriots).

After passing that car on, I got a '68 Impala with a 307 v8. Got my first speeding ticket in about a month.

Final note:

Note the commentary at 11:15. Very true. I was just happy to have a car.

 

I spent a bit of time studying my 2014 factory service manual about the TPMS and there is too much to copy here.

The initial diagnosis is:

From the OFF position, turn the key to ON and check the TPM indicator lamp:

•If after 10 seconds the indicator lamp is illuminating continuously (not flashing), proceed to LOW PRESSURE below.
•If after 10 seconds the indicator lamp flashes on/off for 75 seconds, then remains on solid, there is a system fault detected. Proceed to SYSTEM FAULT below.

Just some FYI information:
-The sensors (possible trouble part) communicate to the WCM - Wireless Control Module (possible trouble part).
-Dealers have a special "TPM-RKE Analyzer, Special Tool 9936, with the Scan Tool" to communicate and diagnose TPMS problems: http://www.etoolcart.com/miller-specil-tools-tpm-rke-analyzer-ch9936.aspx
-The sensors operate at 315mhz frequency.
- There are about 18 DTC (Diagnostic Trouble Codes) associated with the TPMS system.

The first thing that the service manual says to check, before trying to diagnose a sensor or WCM problem, is to check for aftermarket accessories that might impede operation of the radio frequency system. I.E., some aftermarket window tint can interfere with radio frequency.

 

If I turn the key to the on position without starting it no lights are on. When I start it the check engine light comes on immediately and stays on, steady not blinking. Within 10 seconds after starting I hear a chime and the tire light comes on with a low tire message. It stays steady without blinking. Doesn't matter what pressure is in the tires and I have been up to the high 40's it always says low tire. Both of these lights can not be reset by obd readers. First car I ever had were the lights can not be reset.

The dealer fixed my cross members and that seem to help the ride some. I commend Jeep for extending the warranty on this. However, this tpms system and the CVT transmission is a disaster and very dangerous and should of had some recall on them. I am installing the ac condensor and auxillary cooler this weekend and will give feedback on those. Thank you again for the responses.

 

Have the transmission cooler bypass thermostat replaced first before you replace the cooler itself. There's not much to the cooler/condenser unit, it works until it leaks.

 

So I had the aux cooler installed and my mechanic said it is making a significant difference. He doesn't think i will have any more problems with the transmission overheating. We will see. I had him check out the low tire pressure light that has been driving me crazy. He told me all the sensors are working except the spare and that was the problem. This is a small spare but it has a sensor in it. I told him the dealer and this message board informed me that small spares do not have sensors. He assured me this tire did and it wasn't working. My son took the Jeep to college and will not be returning for awhile. I will fix that sensor when he returns and report the results.

 

If its not supposed to be there and it is, why not remove it altogether? New sensors are a bit pricey IMHO.